孕妇在孕期服用叶酸是一种常见的预防性措施。

Taking folic acid during pregnancy is a common prophylactic measure.

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Taking folic acid during pregnancy is a common prophylactic measure.

prophylactic 来自希腊语 prophylaktikos(预防的),由前缀 pro-(在前)和 phylax(守卫)组成,字面意思是"提前守卫",指"预防性的"或"预防措施"。

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